FNGLA Horticulture Landscape Maintenance Practice Test

A practical, systematic approach to diagnosing plant problems in the landscape starts with careful observation of the symptoms—where they occur, how they started, and whether the pattern suggests a recurring stress or a localized issue. From there, checking cultural conditions and irrigation is essential because improper watering, drainage, soil compaction, or nutrient imbalances often produce symptoms that mimic disease or pest damage. Next, inspect for pests and diseases, looking for signs of insects, mites, fungal or bacterial growth, and characteristic damage patterns that point to biotic causes. If the cause isn’t clear, collect samples and reference reliable resources to broaden your diagnostic viewpoint. Finally, test soil or plant tissue as needed to confirm nutrient deficiencies, pH issues, salinity, or specific pathogen presence. This structured process helps you pinpoint the real problem and choose targeted management, rather than guessing or resorting to broad, unnecessary treatments. Relying on quick pesticide applications, replacing the plant, or simply waiting can mask underlying causes and let problems worsen.